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TECHNICAL PAPERS

Local Heat/Mass Transfer With Various Rib Arrangements in Impingement/Effusion Cooling System With Crossflow

[+] Author and Article Information
Dong Ho Rhee, Yong Woo Nam, Hyung Hee Cho

Department of Mechanical Engineering, Yonsei University, Seoul 120-749, Korea

J. Turbomach 126(4), 615-626 (Dec 29, 2004) (12 pages) doi:10.1115/1.1791287 History: Received October 01, 2003; Revised March 01, 2004; Online December 29, 2004
Copyright © 2004 by ASME
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References

Figures

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Schematic view of experimental facility: (a) experimental apparatus, (b) test section
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Schematic view of various rib configurations: (a) 90D, (b) 90U, (c) 90DU, (d) 45V, (e) 45A
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Streamwise distributions of span-wise averaged Sh on the rib-roughened surface for channel with different rib arrangements: (a) 90DU, (b) 45V
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Comparison of average Sh/Sh0 on the rib-roughened surface for channel with 90 deg rib arrangement
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Contour plots of Sh for array jet cooling with initial crossflow at M=1.0: (a) without ribs, (b) 90DU, (c) 45V
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Velocity vector on the stagnation and effusion planes (z/d=3.0 and 0.0) at M=1.0: (a) without ribs, (b) 90DU, (c) 45V
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Contour plots of Sh for impingement/effusion cooling with 90 deg rib configurations at M=1.0: (a) without ribs, (b) 90D, (c) 90U, (d) 90DU
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Local distributions of Sh for impingement/effusion cooling with 90 deg rib configurations at M=1.0: (a) z/d=3.0, (b) z/d=0.0
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Contour plots of Sh for impingement/effusion cooling with 45 deg rib configurations at M=1.0: (a) 45V, (b) 45A
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Local distributions of Sh for impingement/effusion cooling with 45 deg rib configurations at M=1.0: (a) z/d=3.0, (b) z/d=0.0
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Span-wise averaged Sh for impingement/effusion cooling with various rib configurations at M=1.0: (a) 90 deg rib configurations, (b) 45 deg rib configurations
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Contour plots of Sh for impingement/effusion cooling with 90DU rib configuration at different blowing ratios: (a) M=0.5, (b) M=1.5
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Contour plots of Sh for impingement/effusion cooling with 45V rib configuration at different blowing ratios: (a) M=0.5, (b) M=1.5
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Overall averaged Sh for different cooling schemes with various rib arrangements
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Contour plots of calculated Nusselt number for impingement/effusion cooling with 90DU at various blowing ratios: (a) without ribs, M=1.0, (b) M=0.5, (c) M=1.0, (d) M=1.5
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Comparison of calculated Nusselt number with experimental data for impingement/effusion cooling: (a) without ribs, M=1.0, (b) M=0.5, (c) M=1.0 (d) M=1.5
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Pressure drop ratios for the impingement/effusion cooling with different rib arrangements

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